Pinpoint Test

CHECK THE REAR WIPER DELAY 1 (R_WIPE_DEL1) PID
1. Ignition ON.
2. Using a scan tool, view SCCM PIDs .
3. While monitoring the SCCM PID R_WIPE_DEL1, place the wiper/washer switch into the rear window wiper INT 1 position.
Does the PID read ON when the wiper/washer switch is in the INT 1 position?
- Yes: GO to 2 .
- No: INSTALL a new wiper/washer switch. REFER to Wiper and Washer Switch . TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM. REFER to STEERING COLUMN CONTROL MODULE (SCCM) .

CHECK THE REAR WINDOW WIPER MOTOR VOLTAGE CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect: Rear Window Wiper Motor.
Ignition ON.

Measure:

Rear Window Wiper Motor			Ground

C476			Ground
Pin	Circuit	Measurement	Pin	Circuit
1	SBB64 (VT/RD)		-	-

Is the voltage greater than 11 volts?

Yes: GO to 3 .
No: VERIFY BJB fuse 64 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the appropriate OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

CHECK THE REAR WINDOW WIPER MOTOR GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Rear Window Wiper Motor			Ground

C476			Ground
Pin	Circuit	Measurement	Pin	Circuit
3	GD349 (BK/GY)		-	-

Is the resistance less than 3 ohms?

Yes: GO to 4 .
No: REPAIR the circuit.

CHECK THE REAR WINDOW WIPER MOTOR INPUT SIGNAL

NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this information. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector. See Special Tool(s) .

Measure:

Rear Window Wiper Motor			Rear Window Wiper Motor

C476			C476
Pin	Circuit	Measurement	Pin	Circuit
1	SBB64 (VT/RD)	Test Light	2	CRW02 (GY/BU)

Ignition ON.
Place the wiper/washer switch into the rear window wiper INT 2 position and observe the test light.

Does the test light illuminate briefly approximately once every 3 to 5 seconds?

Yes: GO to 6.
No: GO to 5 .

CHECK THE REAR WINDOW WIPER MOTOR INPUT SIGNAL FOR AN OPEN

Ignition OFF.
Disconnect: Windshield Wiper Motor.

Measure:

Windshield Wiper Motor			Rear Window Wiper Motor

C125			C476
Pin	Circuit	Measurement	Pin	Circuit
11	CRW02 (GY/BU)		2	CRW02 (GY/BU)

Is the resistance less than 3 ohms?

Yes: GO to 7.
No: REPAIR the circuit.

CHECK FOR CORRECT REAR WINDOW WIPER MOTOR OPERATION
1. Ignition OFF.
2. Inspect the rear window wiper motor connector.
3. Repair:
  - corrosion (replace connector or terminals - clean module pins)
  - damaged or bent pins - replace terminals/pins
  - pushed-out pins - replace pins as necessary
4. Reconnect the rear window wiper motor connector. Make sure it seats and latches correctly.
5. Connect: Windshield Wiper Motor
6. Operate the system and verify the concern is still present.
Is the concern still present?
- Yes: CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSBs address this concern, INSTALL a new rear window wiper motor. REFER to Wiper Motor - Rear Window .
- No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
1. Inspect the windshield wiper motor connector.
2. Repair:
  - corrosion (replace connector or terminals - clean module pins)
  - damaged or bent pins - replace terminals/pins
  - pushed-out pins - replace pins as necessary
3. Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
4. Connect: Rear Window Wiper Motor
5. Operate the system and verify the concern is still present.
Is the concern still present?
- Yes: CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield
- No: The system is operating correctly at this time. The concern may have been caused by module connections. Address the root cause of any connector or pin issues.